Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Alkaline phosphating solution, preparation method and phosphating treatment process

A phosphating solution and alkaline technology, applied in the direction of metal material coating process, etc., can solve the problems of uneven adhesion, cumbersome treatment process, poor quality of phosphating film, etc., achieve uniform adhesion, reduce process steps, and improve phosphating The effect of efficiency

Active Publication Date: 2021-09-24
SHANGHAI UNIV +2
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides an alkaline phosphating solution, a preparation method and a phosphorus Chemical treatment process, can effectively control the quality of phosphating film, uniform adhesion, simplify the process steps

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Alkaline phosphating solution, preparation method and phosphating treatment process
  • Alkaline phosphating solution, preparation method and phosphating treatment process
  • Alkaline phosphating solution, preparation method and phosphating treatment process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Dissolve 1.5g of zinc phosphate tetrahydrate in 10mL of 3.5mol / L ethylenediamine aqueous solution to prepare a colorless and transparent alkaline phosphating solution. Drop the obtained alkaline phosphating solution on the iron plate, and after natural drying, it can be seen that a circular phosphating film is formed on the iron plate, such as figure 1 shown.

Embodiment 2

[0041] Dissolve 0.75g of zinc phosphate tetrahydrate in 10mL of 1.75mol / L ethylenediamine aqueous solution to prepare a colorless and transparent alkaline phosphating solution. Drop the obtained alkaline phosphating solution on the iron plate, and after natural drying, it can be seen that a circular phosphating film is formed on the iron plate, such as figure 2 shown.

Embodiment 3

[0043] Dissolve 0.375g of zinc phosphate tetrahydrate in 10mL of 0.875mol / L ethylenediamine aqueous solution to prepare a colorless and transparent alkaline phosphating solution. Drop the obtained alkaline phosphating solution on the iron plate, and after natural drying, it can be seen that a circular phosphating film is formed on the iron plate, such as image 3 shown.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an alkaline phosphating solution, a preparation method and a phosphating treatment process. The alkaline phosphating solution includes an aqueous solution of polyvalent metal phosphate and weakly alkaline complexing agent. The preparation method of the alkaline phosphating solution includes dissolving the polyvalent metal phosphate and weakly basic complexing agent in water. The phosphating treatment process includes applying the alkaline phosphating solution on the surface of the metal base and drying it. The invention can effectively control the quality of the phosphating film, the phosphating film is evenly attached, and the process steps of the phosphating treatment are simple.

Description

technical field [0001] The invention relates to an alkaline phosphating solution, a preparation method and a phosphating treatment process. Background technique [0002] The phosphating process has been used in industry for more than 90 years. The phosphating film can provide protection for the base metal and prevent the metal from being corroded to a certain extent; it can be used as a primer before painting to improve the adhesion and anti-corrosion ability of the paint film layer; it can be used for anti-friction lubrication in the metal cold processing process. [0003] At present, almost all phosphating solutions are acidic. By adding acidic substances such as phosphoric acid into the phosphating solution, the dissolution of insoluble phosphate in water is promoted; during phosphating treatment, the free acid reacts with the metal substrate, which increases the pH value of the phosphating solution, resulting in dissolution in the phosphating solution. The phosphate in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/60
CPCC23C22/60
Inventor 石国升方海平杨海军盛世奇杨建仁段满益
Owner SHANGHAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com